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A method for repairing cracks on the mounting edge of a load-bearing frame with inclined supports

A repair method and a technology of inclined support plates, which are applied in the field of aero-engines, can solve problems such as increasing manufacturing costs and production cycles, affecting engine safety performance, and being unable to be used again, so as to achieve extended service life, stable and reliable metallurgical quality, and satisfactory dimensional accuracy. Effect

Active Publication Date: 2021-01-12
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

like image 3 As shown, after a working cycle, several cracks were found on the front mounting edge. The crack length was 10-13 mm, which was a penetrating crack. The thickness of the mounting edge at the crack position was 2 mm, which seriously affected the safety performance of the engine and could not be used again.
When cracks appear on the mounting edge of the existing load-bearing frame of the inclined support plate, it is directly replaced, which increases the manufacturing cost and production cycle, and causes waste of resources

Method used

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  • A method for repairing cracks on the mounting edge of a load-bearing frame with inclined supports
  • A method for repairing cracks on the mounting edge of a load-bearing frame with inclined supports
  • A method for repairing cracks on the mounting edge of a load-bearing frame with inclined supports

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Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0047] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "vertical", "upper", "lower", "front", "rear", "left", "right", The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be...

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Abstract

The invention discloses a repair method for installation edge cracks of a bearing frame of an inclined support plate, and belongs to the technical field of aero-engines. The repair method for the installation edge cracks of the bearing frame of the inclined support plate comprises the following steps: carrying out fluorescence inspection on the installation edge cracks of the bearing frame of theinclined support plate; grinding in the length direction of the cracks, removing the cracks, grinding the surface of a to-be-welded area into a 60-degree groove, and cleaning the to-be-welded area; tightly pressing the left side and the right side of the to-be-welded area through a welding deformation control clamp; carrying out welding repair; carrying out fluorescence inspection and X-ray inspection on the welding part; carrying out vacuum heat treatment on the whole bearing frame of the inclined support plate after repair welding; carrying out manual grinding; measuring the wall thicknessesof an end surface I and an end surface II separately; carrying out runout inspection and turning; and carrying out dimension measurement. The repair method for the installation edge cracks of the bearing frame of the inclined support plate is capable of reducing the repair cost for an engine, and prolonging the service lives of components; and moreover, the metallurgical performance and the dimensional precision of the repaired components meet the use requirements of the engine.

Description

technical field [0001] The invention relates to the technical field of aero-engines, in particular to a method for repairing cracks on the mounting edge of a load-bearing frame of an oblique support plate. Background technique [0002] The load-bearing frame of the inclined support plate of the aero-engine is a large thin-walled cast high-temperature alloy casing with a diameter of about Ф900mm. Such as figure 1 with figure 2 The mounting side structure of the load-bearing frame of the inclined support plate shown is made of K4169, which is the main load-bearing structure in the aero-engine, and it is subjected to large temperature changes and complex stresses during operation. Such as image 3 As shown, after a working cycle, several cracks were found on the front mounting edge. The crack length was 10-13 mm, which was a penetrating crack. The thickness of the mounting edge at the crack position was 2 mm, which seriously affected the safety performance of the engine and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P6/04
CPCB23P6/04
Inventor 陈振林姚红梅王倩菡曲伸刘驰
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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